Boiler and evaporator



June 2, 1931. H. R. KOCK ET AL 1, 8, 3"

BOILER AND EVAPORATOR Filed June 4, 1928 2 Sheets-Sheet 1 1rg0 16 F1 .1

J H. R. F. KOCK ET AL 1,808,663

BOILER AND EVAPORATOR' Filed June 4, 1928 "'2 Sheets-Sheet 2 PatentedJune 2, 1931 UNITED STATES PATENT ossicr,

HANS RUDOLPH FBIEDBICQH ROCK AND ALEBED RUDQLF QUITE, 93 GERMANY BOILERAND EVAIPOBATOR Application filed June 4, 1 928, Serial No. 282,802, andin Austria June 27, 1927.

Sin e st am-boiling has been int oduced in breweries, d stilleif esuger-ts to iies nd. s m lar indu ries, nnni rous eon truetions of boilng e sel have been epplied he e fect of 5 ich is, as rega d ec nomy,greatly su perior to the cooking en tire o uel eonnmption has beenconside bly red-need by the more economical steam-boiling.

As, how ver, the empera res of the wells 19 o the heating pparatusduring tire-cook:

i g and steam-cooking are difl rent, he cook i g proce s s .sre a so defie ent- Specially in bre ries i has ound tha beer brewed by fire hoiing is be e und r ot wise let conditions, than be r produced by -.s en1ourable influence on the product.

boiling. This is due to the fact, that owing to the high ws temperatnresduring fire-hol ing superheat d steam-bubbles are pr duced i t e liquidto e boi ed, whi h h ve a for- This fay, ourab e infl nce cannot beobtained in a simiin manner by s eam-boiling- Th invention con is s inarranging a ris ing pipe e mmunies ing ith the lowe per tion of theboiling e sel an containi g a hea ing de ice, the upper end of saidrising pipe projec ing into he upper portion of the i ner space o theboiling ess l- Se ral e bodim nts of the inven ion are 39 illustrated,by way o e ample, in he accord panying d ings, in hich g- 1 sho s insecti n i combined m sh d rt-tun wi h a vnew boiling and evapo ati g deice.

Fig- 2 sho s in section another forin i eon struot on of the mesh andwort-tan.-

ea ing t bes 2, united a the o er to form a h izo t tubula hea ng ringTo the lowest point of this tubular heating ring 3 an upwsrd yd re ed uow tube s f ater of condensation is oonneo ed The tube .1. is c nnectedby e flexiblemets 7 to a steam valve 5 and the u e 4. by a flexible metatu 8 t a valve 6 or ater feon. donsation. V .A coni l op n ended eas ngr rising pipe encloses t e hea ing t bes 1 2,3 and it eompo ed of two pat hingediy conneeted the one with the other by a hinge 10, v

The t o p t o the rising p pe re seeured in the closed position byCatches or the like, On the c ral steam supply tube 1 s flange 11 isarranged which serves as support for} distributor 1. i Th d ibutor conis s of a tu ular tral part, the lower end of which projects g. shortdista ce o he pper end o the r ing pip 9 o ha wh n h s r sing pipe isopen, the distributor remainsin its position. The dis i u r is oun e n duble hell bearing and has any desired number of arms which have eitherdownwardly openingout o d as shownin Fig. 3 or tange tia o tflo s 1.5 ass own in F g.

The heating tube 1 is mounted on s trans verse bar 16 carried by screwspindles 1-7 and adapted to be shifted in vertical directions by meansof a hand-wheel 19 through the in term di y o a w rm r ying gear 20 andin, horizontal spindle l8.

On he bo tom pla e f e opper r tun 24, which i co er d y a h o 2 a spply pipe 21 is fixe hi h has a lQWer .conieaip r ion and an uppercylindrical portion, the latter projecting into the spa e en o ed by t erising pipe 9. Y A p In the modified form of boiler and evaporator withconstant evaporating snriace as shown in 2, the stationary portion ofthe rising pipe 9 and the hinge bolt 10 are connected with the tun 24 byholders 22 and 23, and the discha-rge piped for the water ofcondensation projects through the bottom plate of the tun. s

The branch tubes 2 of the heating device are connected to thering-shaped tube 3 by a,

tinues to flow through" the closed ring '3 so.

that at all points of the wall a uniform tem-' perature is obtained.Thewater of condensa;

tion is further drawn along, owing to the great velocity of the heatingsteam, and de flected by the partition 32 to be discharged through theoutlet tube 33. The flow of heating steam continues to circulatebetweenthe partitions 31 and 32, and it is sucked on'injector like bythe heating steam injected from tube 2 along the wall 31. r When theboiling orheating device shown in Fig. lis operated,"-its position invertical direction is adjusted according to the actual level of themeshor wort in the tun by means of the screw spindle 17 turned by therotationof the hand wheel 19. The steam'valve 5 and valve 6 for thewater of condensation are open so that the steam bubbles, produced onthe exterior surface of the heatingbodies 1, 2 and 3, are distributedthrough the liquid in the rising pipe9 and form, with the liquid, :1.specifically light mixture which is forced upward into the distributor12 by the over pressure in the liquid in the tun. A rapid circulation ofthe liquid to be boiled is thus produced andalso a rapid transmission ofheat. 1 r

I When the mixture is flowing out of the distributor-space, the steam isseparated and the liquid drops back onto the evaporating surfaces sothat boiling over or rising of froth are prevented. 9 1

The distributor 12 shown in Fig. 4 having I tangential outflows 15 isrotated, together with the risingpipe 9, around its central axis by therecoil at-the' outflowing of the liquid. When the distributor 12' is inan elevated position an injector-like sucking in of the V liquidfrom'the tube 21 isobtained bythe rapid upward flowing of the liquid inthe rising pipe -9 so that also the lower-portions of the liquid areagitated and participate in the boiling and inthe evaporation. The

: liquid circulates constantly through the tube 21 and the rising pipe9. y The operation of the apparatus "shown in Fig. 2issimilar. d iregards brewery technics a considerable progress is obtained with thenew apparatus for the reason that the mixture of steam and liquid, whichis lighter per se,

fiowsat considerable speed along the heating surfaces heated incounter-current, and is superheated so that the valuable roastingproducts are formed and the disintegration of the extract constituentsis .effected'which being a fundamental condition for a brewery.

A further advantage is the good mixing of the liquid due to the highspeed in the'rising pipe, whereby a good separating of the fermentedwortis ensured.

The boiling and heating devices, shown in Figs. 6 and 7 consistseach ofa'closed risingpipe 36 connected by a tube 37 to the-bottom part'of thebrewers copper 24, said ris ing pipe 36 being'arranged on the outer sideand paralleltothetun orcopper, usually in vertical position andconnected by an upper outflow tube 38with the top endof the vesl I Inthe rising tube '36 a'heating body 39 is arranged, concentricallymountedin the rising tube-by means of guideribs 40. A steam supply tube41-isarranged in the low er portion of the rising pipe 36. At the lowestpoint of the heating device a discharge tube 42for the water ofcondensation is a rand descendsalong the wall Of'ilihfl' tube.

The steam circulates, owing to the injector action of thenozzle 45,11 1;onlyinthe tube 43 but also in the annular space between the tube 43 andthe tube 39. 'A high heat transmission, afuniformtemperatu're or theentire heating surface a-nd'flow'ing' off of the water of condensationare thus ensured.

The form of construction shown in-"Fig. 7 differs from that shown inFig. 6 in that the upperend of the discharge-tube 38 isnot directlyconnectedto the vessel 24but by means of an inflow tube 3810 which isrigidly connected to' the'vessel 24 and-adapted to be connected-to theend'oftube 38 by a screw-com nection. The lower-end-of the rising tube36 is connected bya fitting 36a. 1

This fitting 36a, or the lower edge ofthe heating tube 39; is-lower thanthe bottomplate of the vessel 24 so that, even when'the vessel 24 doesnot containmuchliquid, the liquid colum-n'inthe rising pipe36iscomparatively high, liquid to'the outflowtube 38 isensured.

In the fitting 36; a tubular'inlet and outwith the connecting tube 37whereby the rising of the V let are arranged. The outlet tube is closedby a cock- 48" which establishes the connection with the pump 49 bymeans of which the liquid may be pumpedtrom outot the vessel so that therising pipe may be emptied.

The arrangements shown in Figs. 6 and 7 are operated by opening theoutflow valves 35, whereupon the liquid contained in the vessel 24rises, according to the law of the communicating tubes, in the tubes 36to the same height as in the vessels.

By the evaporizing a specifically lighter mixture is produced in thetubes 43 which is returned into the vessels by the pressure in saidvessels through the curved outflow pipes 38. 7

We claim 1 A boiling and evaporating device for boil ng vesselsspecially for brewers coppers, comprising in combination with the vesselproper, a rising pipe communicating with the lower portion of saidvessel and a heating element in and closed against said rlsing pipe,means for admitting steam to the heating element, the upper end of saidrising pipe communicating with the upper portion of said boiling vessel,and means for conveying the water of condensation of the steam in theheating element away from said element.

2. A boiling and evaporating device for boiling vessels specially forbrewers coppers, comprising in combination with the vessel proper, arising pipe communicating with the lower portion of said vessel, aheating device in said rising pipe the upper end of said rising pipecommunicating with the upper portion of said boiling vessel, and adistributor having several arms on said heating device.

3. A boiling and evaporating device for boiling vessels specially forbrewers coppers, comprising in combination with the vessel proper, arising pipe communicating with the lower portion of said vessel, aheating device in said rising pipe, the upper end of said rising pipecommunicating with the upper portion of said boiling vessel, and adistributor having several arms on said heating device each arm having adownwardly directed mouth.

4. A boiling and evaporating device for boiling vessels specially forbrewers coppers,

comprising in combination with the vessel proper, a rising pipecommunicating with the lower portion of said vessel, a heating device insaid rising pipe the upper end ofsaid rising pipe communicating, withthe upper portion of said boiling vessel, and a distributor havingseveral arms rotatably mounted on said heating device each arm having atangentially directed mouth. V

5. A boiling and evaporating device for boiling vessels specially forbrewers coppers, comprising in combination with the vessel device, andmeans proper, a rising pipe communicating with the lowerportion of saidvessel and a heating device in said rising pipe theupperend of saidrising pipe communicating with the upper portion of said boiling vessel,said heating device consisting of a tube branching at the lower end intotwo tubes, and a ring: shaped tube connecting the lower ends of saidbranch tubes.

6. A boiling and evaporating device for boiling'vessels specially forbrewers coppers, comprising in combination with the vessel proper, arising pipe communicating with the lower portion of said vessel, and aheatingdevice in said rising pipe, the upper end of said rising pipecommunicating with the upper portion of said boiling vessehsaid heatingdevice consisting'oi' a tube branching at the lower end into two tubes,a ring: V

shaped tube connecting the lower ends of said branch tubes, a fittingconnecting the lower endof each branch tube with said ring= shaped tube,a tubular outfiow'in the lower portion of said fitting, a partition insaid fitting extending under the open lower end of said branch tube, anda partition in the lower portion of said fitting extending over saidoutflow tube.

7. Aboiling and evaporating device as specified in claim 6 in which afree space is arranged between said two partitions of said fittingthrough which theheating steam in said ring-shaped tube is suckedejector-like.

8. A boiling and evaporating device for boiling vessels specially forbrewers Coppers,

comprising in combination with the vessel proper,a rising pipecommunicating with V the lower portion of said vessel, a heating devicein said ris ng pipe, the upper end of said rising pipe communlcatingwith the upper portion of said boiling vessel, a dis tributor havingseveral arms on said heating for adjusting said heating device andsaiddistributor in vertical 'direc tions in saidvessel. V 1 p 9. Aboilingand evaporating device for boiling vesselsspecially for brewerscoppers', comprising in combination withthe vessel proper, a rising pipecommunicating wlth the low-er portion of said vessel, a heating devicein said risingpipe, the'upper end of said rising pip-e communicatingwith the upperportion of said boiling vessel, a dis tributor havingseveral arms on said heating device, means for adjusting said heatingdevice and said distributor in vertical directions in said vessel,comprising a transverse bar to which said heating device and distributorare suspended, vertical threaded spindles carrying said horizontal bar,a hand wheel, a worm gear,'and a horizontal spindie for lowering orraising said vertical boiling vessels specially for brewers coppers,

comprising in combination with'the vessel proper, a rising pipecommunicating with the lowerportion of said vessel, a heating device insaid rising pipe, the upper end of said rising pipe communicating withthe upper portion ofsaid boiling vessel, a distributor having severalarms on said heating device, and a supply tube conical at the lower endmounted on the bottom plate of said vessel and extending into saidrising pipe.

12. A boiling and evaporating device for boiling vessels specially forbrewers coppers, comprising in combination with the vessel proper, arising pipe communicating with the lower portion of said vessel andcomposed of two parts, a hinge connecting said two parts of said risingpipe, and a heating device in said rising pipe, the upper end of saidrising pipe communicating with the upper portion of said boiling vessel.v

13. A boiling and evaporating device for boiling vessels specially forbrewers coppers, comprising in combination a boiling vessel, a risingpipe on the outer side of and parallel to said vessel, a connecting pipeconnecting the lower end of said rising pipe with the lower portion ofsaid vessel, a valve for closing said connecting'tube, a curvedconnecting tube connecting the upper end of said rising pipe with thetop portion of said vessel, and a heating device in said rising 1 e. 14.A boiling and evaporating device for boiling vessels specially forbrewers coppers, comprising 1n comblnation a boiling vessel,

a rising pipe on the outer-side of and par-.

allel to said vessel, a connecting pipe connecting thelower end of saidrising pipe necting the lower end of said rising pipe connecting tubeconnecting the upper end of said rising pipe with the top portion ofsaid vessel, a heating devicein said rising pipe, a removableintermediate element connecting said rising pipe to saidlower connect?ing pipe, and an intermediateelement connecting said upper curvedconnecting tube to said vessel. 5 16. A boiling and evaporating devicefor boiling vessels specially for brewers coppers, comprising incombination a boiling vessel, a rising pipe on the outer side of andparallel to said vessel extending a certain distance below the bottomplate of said vessel so that a higher liquid column'is formed in saidrising pipe than in said boiling vessel.

In testimony whereof we aflix our signatures.

HANS RUDOLPH FREEDRICH KOCK. KARL ALFRED RUDOLF QUlTT.

p with the lower portion of said vessel, a valve for closing saidconnecting pipe, a curved connecting tube connecting the upper end ofsaidrising pipe with the top portion of said vessel, and aheatingfdevice in said rising pipe consisting of two concentrical tubescommunicating the one with'the other and of a steam supply nozzleprojecting into the innerrone of said communicating tubes.

7 15. A boiling and evaporating device for boiling vessels specially forbrewers coppers, V 7

comprising in combination a boiling vessel, a rising pipe on the outersideof and parallel tosaid vessel, 'a 'connecting pipe con.-

